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Finding the Fourth Proportional to 70,032.68, 96,642.92 and 39,821.30

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Solution

The fourth proportional to 70,032.68, 96,642.92 and 39,821.30 is: 54,952.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,032.68 : 96,642.92 = 39,821.30 : x
  2. Step 2: Convert to fraction form
    70,032.68/96,642.92 = 39,821.30/x
  3. Step 3: Cross multiply
    70,032.68x = 96,642.92 × 39,821.30
  4. Step 4: Simplify right side
    70,032.68x = 3,848,446,511.09
  5. Step 5: Solve for x
    x = 3,848,446,511.09/70,032.68
  6. Step 6: Final answer
    x = 54,952.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.